George robrigtjes



Oct. 1, 1929.

G. RODRIGUES SPRINKLER Filed Jan. 51, 1928 a INVENTOR.

- ATTORNEYS.

Patented Oct. 1, 1929 "UNITED STATES SPRINKLER Application'filed'January 31Q- 1s2s. Seria1'No.250,748.

. --This invention relates to garden sprinklers of the type wherein the sprinkler head is revvolved by the reaction of the water egressing through tangentially arranged nozzles car- H 5 ried by the sprinkler head.

i .In order .to obtain a maximum range for a sprinkler nozzle, the-latter mustbe -revolved very slowly to avoid a whipping action which-reduces the throw of the-water and consequently reduces the area irrigated by the sprinkler. i

It is the principal object of the present invention to provide a simple and inexpensive sprinkler fitted. with a main nozzle very slowly rotated by secondary nozzles which are actuated by the reaction of escaping waterjets. In carrying out the invention into practice, I provide nozzles on a sprinkler head adapted to be revolved by the reaction of water jets escaping therefrom. The sprinkler head operated by the nozzles is operatively connected to what I prefer to term 'a main nozzle, by means of a simple gear mechanism. This. gearmechanism may be run in lubricant and the gear ratio between the reaction nozzles and the main nozzle is such that the-main nozzle will revolve-at a greatly reduced speed relativeto the reaction nozzles, The construction of thedevice is such that friction is minimized which aids in permitting the main nozzle to be slowly revolved. P a

One form which the invention may assume is exemplified in the following description and illustrated bywayof example-in the accompanying drawings, in which: Fig. 1 is a View in side elevationof a sprinkler. embodyingthe preferred form of my invention with partsthereof in section to. more fully disclose'its constructions Fig. 2 is a view in plan with the cover plate and reaction nozzles removed. i Referring more particularly to the accom- .panying drawings,- 10 indicates. a trunnion PATENT OFFICE,

snonen nonnienns. oncasrnovrtnce, canrronma having a threaded lower end 10 by means of which it may be-connected to a pipe or conduit connected with a source of water un den-pressure. .This trunnion 10 is tubular and is adapted to be arranged stationarily in a vertical position. At itsupper end the interior diameter of the trimnionlO is reduced to provide a bore-11, anannular. shoulder. 12 being disposed between; the 1 larger 1 and smaller bores-of the-trunnion; A 'Acylindrical casing14 isprovid'ed which is interiorly bored so that it may be rotatably mounted I onv the trunnion- 1 10. .The casing 14 is :disposed OILEtl'lB trunnion -between an annular 'shoulder15 at the'zupper extremity 1 of the trunnion-ands. packing member 16 .arranged on the trunnion at its lower end, and secured in place by a nut 17 threaded on the, threaded portion 1O ofthe trunnion 10. Packing 18 is interposed between the annular projecting shoulder 15 on the trunnion and the upper end of the cylindrical housing 14, .andsimilarly packingi19 is interposed between the lower end of the housing 14 and .thepacking member 16. By adjusting the .nut 17;, the' housing 14 may be properly, fitted betweenthe shoulder 15 and the packing .member 16,- the packing 18 and19 acting to prevent leakagerbetween the bore of the housing arid-the exterior surfaceof the trun- .nion upon. which-the housing revolves.

Intermediate its ends the casing 14 is -formed with anannular chamber 20 which ,is exteriorly of the exteriorsurfaceof the ;-.trunnion. Amainnozzle 21 is threaded into ,the. casing 14- at a .point ,where it will .communicate. with this, annular chamber 20. The nozzler2 1 projects radially and is slightly upwardlyfinclinedso as to project a spray :of water. outwardly, and upwardly. At its out'er, endithisonozzle is. provided with an adjustin screwQZ-tobrak up a stream of Water discharged from the nozzle, so, as to distribute the w ll er. more uniformly en the groundbing irrigated. a 1

action nozzles 24; which are adapted to be at eis'ae ti iewawrist escaping therefronii "-'1hes reaction nozzles are formed with tubular portions-threaded at their inner enrls,;..into;a, 25 This-I is in turn threaded on the upper end of a tubular shaft 26 arranged coar'ially Q-f,the1- trunnion 10. At its lower end this tubular shaft 26 is formed with an annularshoulder 27 overlying the annular shoulder 12 between the two bo'reso'f thetrunnion "10. It is seem that 'theshaft 26' fits the smaller bore 11 of the trunnion; Between the annular 'shoulders27 and '12 'on the-tubular shaft 26 and trunnion= 1-0-iis pa'ckin'g' 28fwhich acts to prevent the ileakage of- Water upwardly around the shaft 26i' l 1 1 5 Secured on 'the shaft 26'-=ab"ove the trunnion is a wot-111 29 whichbe'airs'againstthe top of 30 thetrunnion 10- to support t he'shaft26 and the nozzles {2 k in {its proper vertical position relative to -the 'triimiioni "This wor-m' 29 meshes with whatl prefer to {term a'dupl'ex gear 30 which is =ar'ran'ged with axis at right "3'5 angles' to thatlof'the worm; This gear 30is rotatablysupported by a" braeket'Sl which is clamped to the reduced upper end 32 of the trunnion 10. This-du lex gear 30 is so cut that it'has teeth meshing with the worm 29,

' the angle "of theseteethbeingcqual to the angular pitchof the worm "29. 'The gear 30 also has a worm' cut inits face to mesh with the teeth' offa gear 33' whichis flfixed to the casing 14.;

" The action ofthe gear arrangement is such *thatrotation of the worm 29 will slowly re- :volve the duplex- "gear 30; This gear through theworm cut in its face-will drive the gear 33' at-a still'ifurther reduced speed.

As the gear-'33is fixedto the casing 14 the latter will be slowly revolved, revolving the main no'zzlefi21'. E

I intend that theg'ears be run in' lubricant 'so as to minimize'frictiori* and for this purpose the upper end of-the ca'sing Mis "formed with a radially'projecting flange "34:,the peripheral edge of -whic'h" is -'tli rea ded. 'Arranged over the gear mechanism is 'an inverted'cup-shaped cover a-a'intefiorly threaded so that it may be connected to the flan'ge34 I on the casing. At its upp'er' end this'bover 35 is formed with a gla d sc" 'carryi'ii'gpa'cking, embracing the tubularshaft26 to pre- 'vent' lubricant from escaping It is obvious, therefore," that liibricant may be kept in the chamber formed by the inverted cup-shaped cover 35 and the flange 3 k, and that friction therefore between the gears will be minimized.

In operation of the device, it is constructed and assembled as shown in the drawings and the lower end of the trunnion 10 is suitably connected with a source of water under pressure and stationarily disposed in a vertical position. The'water entering the interior of the trunnion 10 will seek to discharge through theimain ,nozzle- 21. The spray/"from this nozzle will'bebroken up-partially bythe adiusting screw 22 so that the water will be evenlyrdistributed over the surface being irrigated.

'-;Some of the water entering will pass upwardly through the hollow shaft 26 and discharge through the reaction nozzles 24, which are disposed horizontally or radially with respect to the'vertical aXis of the device. The reaction of the water discharging through these "nozzles24c will cause themto revolve and as-they are fixed-to the tubular shaft 26,

the position of this gear 30is fixed, it s-rotary motionwill-tencl to drive the gear 33 andas this latter is stationary on the casing 14, this "casing'will revolve very slowly, slowly revolving'the main nozzle'21'; I v

' As thep'oint's between the'different parts are all packed, there will be no leakage. Also, as "the gears are run in lubricant, friction will be minimized.

' From the foregoing it is obviousthat'lhave provided a very simple and inexpensive device-whereintlie main nozzle will 'be revolved very slowly so that whipping action of the water willb'e eliminated, so that a maximum area will be irrigated by my sprinkler.

lVhil'e I have shown the preferred form of my invention, it is to be understood that va- 1 rious changes maybe made inits construction by those skilled in the art without departing'fromthe spirit of the invention, as defined in-the appended-claim.

l-laving thus described my invention, what claimand desire to secure by Letters Patent A sprinkler comprising a stationarvhollow trunnion-arranged vertically and to the interior of which water may be delivered, said trunnion having'ports formed'therein, a casing rotatably mounted'on the trunnion for rotation concentric thereto, a main nozzle "carried by said casing and adapted tocommunicate with said ports, a tubular shaft journalled in the upper end of-the trunnion *and' extending vertically coaxially of the trunnion, horizontally arranged reaction noz- "zles'earriedjbythe upper end of said tubu- 'la'rsliaft in communication-with the interior GEORGE RODRIGUES. 

